Window structure



May 18 1925.

W. .T. ROCK WINDOW STRUCTURE Filed June 4 2 Sheets-Sheet 1 May 18 1926. 1,584,809

W. T. ROCK WINDOW STRUCTURE Filed June 4, 1924 2 Sheets-Sheet 2 reamed May is, was.

WILLIAM T. 300K, 011 FORT SCOTT, KANSAS.

WINDOV-f STRUCTURE.

Application filed June 4,

This invention relates to improvements in weightless window sashes and has as one of its objects to provide a window sash of the class mentioned so constructed that the up- 5 per and lower sashes of the window may be readily and conveniently adjusted to assume any desired positionand will be maintained in the positions to which they are adjustedwithout any likelihood of the adjustment being disturbed.

Another object of the invention is to en tirely dispense with weights and provide a much simpler construction than one embodying weights, and furthermore provide a construction which will be more reliable and certain in its action.

Another important object of the invention is to provide a window structure in which the sashes may be adjusted without the necessity of reaching upwardly,to lower either sash which may at the time be in an elevated position.

In the accompanying drawings:

Figure 1 is a perspective view of the window structure embodying the invention, the

upper sash being shown partly lowered and the lower sash in full lowered position;

Figure 2 is a vertical sectional view in detail taken substantially on the line 22 of Figure 1 looking in the direction indicated by the, arrows; Y

Figure 3 is a view in elevation of the midportion of the upper rail of the lower sash, a part being removed to more completely disclose a portion of themechanism Figure 4 is a vertical longitudinal sectional View through the said upper rail of the lower sash and through a portion of the mechanism provided for adjusting the sashes;

Figure 5 is a vertical transverse sectional view taken substantially on the line 5-5 of Figure 4 looking in the direction indi-' cated by the arrows;

V Figure 6 is a similar view on the line 66 of Figure 4': looking in the direction indi cated by the arrows.

In the drawings, the window frame is indicated in general by the numeral 1, the upper sash in general by the numeral 2, and the lower sash in general by the numeral 3.

' The window frame 1 comprises upright stiles 4, a top rail 5, and a sill 6. Unlike the window frame structures which are required Where the window sashes are counter-bah anced by weights suspended at the ends of need not be specifically described.

1924. Serial No. 717,819.

sash cords, the stiles of the window frame, in the present invention, may be of substantially one-piece structure inasmuch as it is unnecessary to provide the usual hollow construction to accomodate the counter-balancing weight. Therefore, the stiles of the window frame, of the present invention, may

be produced at a much lower cost than the ordinary stiles referred to above. The upper rail 5 and the sill 6 may be of any desired construction and inasmuch as these two parts do not enter into the present invention, they The stiles at are provided upon their opposing 79 faces either with suitably spaced sets of cleats 7 to constitute guides for the sashes 2 and 3, or the opposing faces of the stiles may be formed with grooves to receive the said sashes and thus guide the same in their up and down movement.

The sash 2 comprises the usual stiles 8, an upper rail 9, and a bottom rail 10, and likewise the sash 3 comprises the usual stiles 11, an upper rail 12, and a bottom rail 13.

The invention contemplates connecting the two sashes 2 and 3 by flexible elements located at opposite sides of the structure, the connection of the said elements with the sash 2 being a fixed one and means being provided upon the sash 3 for taking up or paying out the said elements, so that the desired adjustments of the two sashes may be effected. In the drawings, the numeral 1% indicates a metallic ribbon or the like which is secured at its opposite ends to the upper end portions of the stiles 8 of the upper sash 2 as indicated by the numeral 15. The two stretches of the metallic ribbon are led upwardly within the guides for the said sash 2 and through the tubular shanks 16 of. bearing members. 17 which are'mounted upon the top rail 5 of the window frame by having their said shanks driven intoopenings 18 formed in the said top rail 5. Rollers 19 are rotatably mounted in the bracket members, in. the'upper ends thereof, and the said stretches of the metallic ribbon are passed over the said rollers and are thence led forwardly and passed over rollers 20 mounted in correspondingly formed brackets 21 located at the upper ends of-the guides for the lower sash 3. Similar brackets 22 are arranged in the ends of the upper rail 12 of the lower sash 3, and the stretches of the ribbon are passed over rollers 24: mounted in the said brackets From,

the rollers l. the stretches of the metallic ribbon are led beneath the upper rail 12 ot the lower sash 3 and the intermediate portion of the, said ribbon is passed through a slot formed in a small cylindrical drum which is rotatably mounted in a socket 2? provided in the said rail 12, the said socket being formed in the r ar wall of a recess 27 provided in the oi" the said rail. The stretches of the ribbon are wound upon the drum 26 in the manner clearly shown in Figure l of the drawings and one or both of the stretches may he )assed over suitable anti-"friction rollers mounted upon a face plate 29 which closes the said recess 2?. the face plate being secured to the face of the rail 12 and having a rearwardly projecting tog port-ion 230 which constitutes a closure for a latch casing which is indicated by the numeral 31. A gear 32 is mounted upon or may constitute an integral part with the 'durm at the for vard enl the said drum, and the said gear is provided with a stub spindle indicated by the numeral 83, the spindle being rotatably journaled in an opening 3i formed in the face plate 29. A sprocket chain is trained over the sprocket gear 32 and thischain, in ord r to not be unsightly, may be of any ornamental design or construction. The chain is endless and its stretches depend from opposite sides'ot the sprocket gear through an opening provided in rear of the face plate 29 as shown in Figure 5 of the drawings, the said face plate being preferablyspaced from the face of the rail 12 and a plate 36 being secured to the face of the rail 12 at the front of the recess 27.

It is observed that thesashes are approximately of the same weight so that one sash acts as a counterbalance for the other and the ribbons 14:, or like flexible connections, cause the sashes to move in unison so that when the lower sash 3 is raised, the uppe sash 2 is correspondingly lowered. i y having a portion of the ribbons 1 t wound upon the drum 26 their ettective length may be varied so that the sashes may be independently adjusted to any required position. Free rotation of the drum 26 is prevented by mounting the same frictional-l hence positive rotation of the drum '26 in either direction can be etl'ected only by operating the chain 3%, a down pull upon the right hand stretch of said chain rotating the drum 26 in a clock-wise direction to wind the ribbons l-l thereon, and a down pull upon the left hand stretch of the chain rotating the drum 26 in acounter clock-wise direction and unwinding the ribbons l t theretrom. Assuming that, both sashes are in closed position, it will be readily understood that raising the correspondingly lowers the sash 2 sash o and when both sashes are in this position, the upper sash may be lndependently ra1sed orlowered by applying the hand to the lower sash so as to hold it against movement, and at the. same time operating the chain ltt to take u'p'or let'out the ribbons ll, :1 down pull on the right hand stretch of the chain 3t; raising the sash 2 and a down pull upon the. let't hand stretch ot' said chain lo-.=:erin;g the sash 2, as will be readily appreciated. The lower sa h 3 being readily :u-cessible is raised or lowered in the usual manner and when adjusted to the required point it; is held against further nioven'ient by the hand and adjustment; of the u iper sash 2 is c1- icct'ed by operating the chain it; in the manner stated. lly providing two sets ot ribbons 1-1; or like flexible connect ions and locating them at opposite sides ol the window lnnding ot the sashes in the 'l'rame is obviated, and the stretches being in line with the side stiles of the sashes, it not necessary to brace the sashes.

'Firqed upon a pivot pin '37 rotatably mounted in the latch casing -31, is a latch hook 38 which is of substantially the curved form shown in Figure 6 ot' the drawings, and a linger button 39 is fixed at the upper end of the pivot pin 37 where it projects through the top otthe latch casing and is adapted-to be manipulated to effect rotation of the said pivot pin and a swinging movement of the latch hook 38 from the lull'to the dotted 'line position shown in Figure 6, and vice versa. A keeper casing 10 is fixed upon the upper side of the lower rail 10 of the upper sash 2 and mounted therein is a keeper pin all about and against which the free end oi the latch hook 38 is adapted to engage in the manner shown in dotted lines in the said Figure (3, when the latch hook is in locking position, it being evident by reference to the said figure that when the latch hook is in the full line posit-ion shown therein, the sashes may be adjusted.

Having thus described the invention, w rat is claimed as new is:

1. In a window, the con'lbination with the frame and upper and lower sashes slidable vertically therein, 01 flexible connections at opposite sides of-thewindow secured at one end to the respective sides of the top sash, guides at the top of the 'l'ranie tor the flexible connections which pass thereover, a drum frictionally mounted on the lower sash and having the other end oi the flexible connect-ions wound thereon, and an endless member supported by the drum and extending within convenient reach to be operated to positively rotate the drum to wind or unwind the flexible connections to raise or lower the upper sash.

2. In a window, the combination with the frame, upper and lower sashes slidable vertically therein, guides at the top of the frame adjacent the sides thereof, and guides at the upper corners of the lower sash, of flexible connections at the sides of the window passing over the top guides and secured at one end to the top sash and passing over the guides at the corners of the lower sash, and a drum mounted upon the lower sash and having the other end of the flexible connections wound thereon.

3. In a window, the combination with the frame, upper and lower sashes slidable Vertically therein, guides at the top of the frame adjacent the sides thereof, and guides at the upper corners of the lower sash, of flexible connections at the sides of the window passing over the top guides and secured at one end to the top sash and passing over the guides at the corners of the lower sash, a drum mounted upon the lower sash and having the other end of the flexible connections loosely connected thereto for adjustment and wound thereon, and means for rotating the drum to wind or unwind the flexible connections to vary their effective length to efiect adjustment of the upper sash.

4. In a window, the combination with the frame, upper and lower sliding sashes, guides at the top of the frame adjacent the sides thereof, and guides at the upper corners of the lower sash, of a drum frictionally mounted upon the top rail of the lower sash and provided with a transverse slot, a flexible element passed through the slot of the drum and wound thereon, and having its end portions passing around the guides at the corners of the low 1' sash, thence over the guides at the top of the frame and connected to the top sash, a sprocket gear fast to the said drum, and an endless sprocket chain passing over the said sprocket gear,

In testimony whereof afiix my signature.

WILLIAM T. BOOK. [n s] 

